Chip conveying means



1952 E. J. LOMAZZO CHIP CONVEYING MEANS 2 SHEETS--SHEET 1 Filed Sept. 25, 1948 INVENTOR. Edmund LamazZU ll 41 .m\

ATTORNEY? Oct. 7, 1952 E. J. LOMAZZO CHIP CONVEYING MEANS 2 SHEETS--SHEET 2 Filed Sept. 25, 1948 i .rfihhwh.

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INVENTOR. Edmund J. Lomazzo ATTORNEYJ Patented Oct. 7 1952 'asiaase UNITED s QiFiFiGE whereby the-workpieoes'may beim-ore readilyiinserted and removed fromthe "maehine and, if

the workbiecespare hf sueh size as 'i'equi'r'e 'co'nveying means, "they 'mayf be bfoughtinto position 'without interference, lhebed is provided with a chip and coolant removal means indluding an "openingextending under the workpieces fior the full length ofthe working-space {1dr receiving chips and coolant from thewdrk iiece and for conducting the chips fromtheworking-space t the back ofthe maehine forremoval therefrom without obstructing the "working space or interiering with the work-positionedtherein.

The chips can be -mo'ved by gravity to the back of the maehme, can "be conveyed hem {be- =neath the opening by means "of a *conveyor, or both as required.

Other features and i advantages 1 or "the 'ipresenlt "invention will be apparent froi'mthe ibebifleittio'n and "claims when considered ineoiin'etion with the drawings inwhi'ch:

- l Figure l is a back view of the imadhiiie.

Fig. *2 is a vertiealtransverse-"Section through themachine, I l h l figA -isa -s'eetional vieW-takemellongfline ll Fig.5is a-sectiozial view taken along line 5-5 of Fig. 3.

The lathe ofwthe;present-invention has a frame provided with endpedestals 10, H. Thepedestal II has mounted thereina driven tworkhhuck'lzh The frame has a main bed I? ier-supporting a tailstock and a back carriage structure and is provided with a top bed -l6 mounted above the main bed on thepedestals (H), H :for carrying an "overhead tool carriage .11.

'With the 'elements arranged a shownfin Figs. 1 "and 2 it will be seenthat'thellathe is entirely open in the from between .the .chuck l2 and tailstock l4 and provides a "work space therebetween to receive a woi'knieee without obstruc- 'tion by the usualfront toolca'rriage or -*operating means usually found on such machines. *Thus work can be readily moved from a conveying -means or'other work transporting means mot v H 4 I shown) into work supporting position and may 55 -passaee into or moreisectiens, tthus ai'ding =12 towns. (o1; twist) F be removed from said position iieailll so that "the madhine is 11iartieularlrwl 1 suited "for high "speed in roduction work.

Specifically. the main bed 13 "is provided with ways fl 8' on whiehthe "tailstock N is mounted for adjustmenttowardandaway jfromthe headstock and "clamped in adiustdflpdsiti'on by means 'of the bolts {mot shown) fThe am bed ts also has ways 19 ion "whih the ,rear tool carriage "i 5- s1 ldes lorig'itudinally to the {required "position in when the mm is nroveq toward me from "the workpiece *dufingthe cycle "operation on the moi'k.

The top bed 16 is prel'eiably'sjubstantially rectangular orosssection; asshown in Figs. :1 "and rand'mafhave fa rib orfilletfzfl extending "along the "top thereof a'sfrjequired. The top "tb'edi-has 'on its face *apair dIways -21 for suhporting "the oveztheadtool carriage I 1 fdri1ongitudinal moveme'ntalongthe work. r

The frame' with its mam ewand top bed may "be made from suitable castings or may -be fabricated from welded sheet sto'ck as desired and as is shown enloses the operating "meehanism nifthe machine.

The-presentflnifntioh*provides forthe=fficient *removavo'r-emps ant c ent Without requiring the *Stbppage of the *madhin'e or in any way obstructin'g the working space. ?'I-his is accom- '*plished-byiprov"itiing the main 'bed under'the work space "with an opening -22 Fig whieh extends between the pedestals for the ffill length of *the "working space for receiving the ehips produced during "a cutting operationen'd also for receiviin g the usual *cddlantwhih is --projected -onto the work {during s aid operation.

"This opening is direetly bel'ow the wotkpiece and 1s or such a'width *that'-*the" chips produced by the overhead and wear cutting tools and the coolari't "drop therethrough "by gravity and into the passage 23 whih extends downwardly and =-rearward1y to the back of the maehine-and'terininates in an opening 24 extending across the *backsdtf the machine as-"sho'wn in "Fig. *1 through which the'chips'may be removed. It will be seen sthajt the em s are collected and delivered to a "point at the back er "the *maehine ="from which they can be removed into f9) suitable chip disposal means' without requifin'gstoppage of-the machine or "without interference with =the progress of the work on *a workpiece.

11 desired, the fpassage may 'be provided with "one or smote [reinforcing a'ibs 25 which tie the main bedtog'thehand separate the chip receiving cured thereto for rotation therewith. U

sprocketsy42, 43 areconnected by chains 44, 45

the inner surface 21 of the lip being upwardly inclined to aid in chip removal. The bottom of the frame at the lower end of the passage 23 is provided with a strainer 28 through which the coolant may be separated from the chips andv pass into a coolant receiving duct 29' to be re-" turned to the coolant supply. The lip will retain the chips in the passage until an operator manually removes the same.

As herein illustrated the part of the passage on the other side of the rib 25 is provided with automatic means for discharging the chips. This comprises a conveyor means 30 mounted therein so as to extend into the passage with its end projecting through an openingfi-H formed in the wall of the passage so that the end of the conveyor lies under'the opening 22. Theother end of the conveyor rests on the lipilt so that the conveyor extends beyond'the backof. the machine so that chips are removed from the passage and carried out to be deposited automatically in chip removal conveyances. u

The conveyor comprises side frames 32 having shafts 33, 34 mountedthergon, adjacent the ends thereof to extend thereb'etween'shaft 33 being nonrotatably clamped .to the side frames and shaft 34 being rotatably mounted inbearings 35 carried by slides 35a. Shaft33 has a pairjof'supporting blocks 36 secured thereto by. set screws or the like 37 and shaft 34 has a similar pair of supporting blocks 38 mounted thereon for relative rotation with respect thereto. In the'preferred form of the invention an endless band iit is positioned aroundthe supporting blocks and forms achip receiving table extending for the length of the conveying means. By; adjusting the slides 35a by means of adjusting means 40, Fig. 2, the band is made taut and is held against movement by the friction between thebelt and the fixed supporting blocks 36. Theband; has a flange 4! on each side of the upper reach thereof to prevent the chips from falling therefrom. The shaft 33 has a pair of sproclrets li' rotatably mounted thereon besidethe tableand between the blocks 36 and the side frame and shaft. has a pair of sprockets 43 similarly located and'se- The extending along the sides of the table, and each chain has fastened thereto at intervalscross bars 46, each having a downwardly projecting scraper fiangedta which overlies thetable between the side flanges 44 thereof. Shaft 34 is driven by a motor 47 through chain 48 and a slip clutch mechanism 49 mounted on the end of the shaft. The slip clutchmechanism comprises a collar 55 keyed or pinned to the shaft and having spring-pressed balls Eta cooperating with recesses in the face of a sprocket 5i rotatable on the shaft and driven by the chain 48 to drive the shaft, said spring-pressed balls yielding to perrnit relative rotation between the collar and V sprocket 5| when an overload is experienced. -As

the shaft 34 is rotated, it drives sprockets 43 and chains 44, 45 which move the flanges 46a over the table and scrapes the chips which have been disposed on the table off the table and out beyond the back of the machine.

Deflector plates 52 carried by the web 25 and the end of the pedestal i I extend over the chains 44, 45and protect them from falling chips. The plates direct the chips falling into the passage onto the table and a blade 53 connected to the front wall of the passage overlies the edge of the opening 3i and directs the chips sliding down the front wall of the passage rearwardly onto the table. These elements insure that the chips will be positioned on the table to be engaged by the scrapers and removed thereby.

, Variations and modifications may be made within the scope of this invention and portions of the improvements may be used without others.

I claim:

1. A chip conveyor for use with a metal working machine having a chip-receiving opening comprising a frame having one end adapted to be supported under said opening; a shaft at each end of the frame; a taut endless band stretched between and supported by said shafts to form a chip-receiving table, one of said shafts being fixed against rotation and holding said band against movement and the other shaft being rotatable and having drive means therefor; an endless member positioned adjacent each side of the band and driven by said other shaft; and a plurality of cross bars each having a; scraper memberithereoncarried by-the endless members and movable over the bandto scrape chips deposited thereon and discharge them from the other end of the frame.

g 2. 'A chip conveyor for use with a metal working machine having a chip-receiving opening comprising a frame having one end adapted to be supported under said opening; a shaft at each end of the frame; an endless band stretched between and supported by said shafts to form a 7 REFERENCES CITED The following references are of record in the file of this patent:

. UNITED STATES PATENTS Number Name 1 Date 1,923,781 Flanders "1- Aug. 22, 1933 1,926,997 Hoelscheret al Sept. 12, 1933 2,124,216 Tessky July 19, 1938 2,493,451 Gaddis Jan. 3, 1950 FOREIGN PATENTS Number 1 Country Date 12,063 a Great Britain June 13, 1901 H 507,377 Germany Sept. 15, 1930 327,655 Italy July 17. 1935 

